Perforator



June 9, 1925.

E. H. SALT PERFORATOR Filed March 14 1923 2 Sheets-Sheet l E. H. SALT PERFORATO R Filed March 14 1923 2 Sheets-Sheet 2 ELMER H. SALT, OF

F CINCINNATI, OHIO, A

PATENT I OFFHOE.

NORWOOD, OHIO. ASSIGNOR TO THE GLOBE-WEBNIOKE COMPANY,

CORPORATION OF OHIO.

PERFORATOR.

Application filed March 14,

To all whom it may concern:

Be it known that I, ELMER H. S'ALT,- a citizen of the United States, and residing at Norwood, in the county of Hamilton and State of Ohio, have invented a new and'useful Improvement in Perforators, of which the following specification is a full disclosure.

This invention relates generally to punching machines and particularly to a machine for punching relatively thin sheets of material, such as sheets designed for use in loose sheet binders, ledgers and filing cabinets, wherein a plurality of openings are provided at one margin of the sheet, the openings being generally spaced conformably to the spacing of the pins or projections of a hinder or file cabinet upon which the sheets are adapted to be placed after punching.

An object of the invention is to provide means for gauging the distance of an opening orrow of openings relative to the edge of the sheet. I

Another object of the invention is to provide means for adjusting the gauging means ofa plurality of punch-carrying heads or units to simultaneously move the same in equal degree for gauging the distance of the openings relative to the edge of the sheet.

Another object of the invention is to provide means by which the punch-carrying units may be set for punching holes in any desired linear relation with one another.

Another object of the invention is to provide means for centering the paper relative to the )unch-carrying units.

Another object of the invention is to provide a paper gauge for centering relatively small sheets of paper, said gauge attachable to the paper-centering means.

Other objects and certain advantages will appear in a description of the drawings forming a part of this application, in which:

Figure 1 is a plan view of my punching machine, a sheet of paper being shown, in

dot-and-dash lines, inserted therein to illustrate the manner of operating the paper gauge and guide.

Figure 2 is a vertical longitudinal section on line 2-2, of Figure 1.

Figure 3 is a transverse vertical section on line 33, of Figure 1.

Figure 1 is an end view of Fig. 1. s

Figure 5 is a detail of a modified form of from the left side ential groove of the shaft 2. Mounted upon 1928. Serial No. 625,161.

punch-carrying unit having a plurality of punches mounted thereon.

Figure 6 is a side elevation of the structure shown in Fig. 5.

Figure 7 is a fragmentary detail plan showing the form of paper gauge positioned as in use for gauging small sheets of paper. F Fi ure 8 is an elevation of the structure of The machine comprises a base 1, in the form of a box-like having-centrally mounted upon its top and longitudinally thereof, a unch operating shaft 2, rotatively stepped in oppositely disposed bearing blocks 3, attached by screws to the base 1.

The shaft is lever 4, which is depressible to rotate the shaft and operate the punches, and said shaft is heldfrom lateral movement within the bearings by a'suitable catch 5, having a notch therein engageable with a circumferthe shaft 2 are, in this instance, a plura ity of slidable punch-carrying units 6 of similar construction, each comprising a block or frame, having mounted therein a vertically reciprocable punch 7 slidable within a vertically disposed cavity 8. The punch comprises a reduced counter-turned portion 9, the lower end of which engages and cuts the stock, about which portion and within the socket -is disposed a compression spring 10 which acts to retract the punch. The upper portion of the punch provides a tooth ll and a depression on either side thereof, the tooth being engaged with a groove 12 extending longitudinally and throughout the length of the shaft 2, whereby the punch frames may be translated upon the shaft, and the punches always operable thereby.

When the shaft is rotated by the depression of the lever 4, all punches are simultaneously lowered to punching position and, after passing through the stock and across the paper-receiving slot, into engagement with the opening 13 at the base of the punch.

A stock or paper receiving slot 14: is provided horizontally adjacent the lower side of the unit and an additional vertical slot 15 at right angles to the slot 1 1 is provided at the rear thereof. The slot 15 engages a guide rail 16 disposed longitudinally and parallel with the shaft 2 and at the rear thereof, which rail is in the form of a sheet e5 sheet metal stamping v rovided at one end with a p rear of the metal L-iron, the horizontal portion of which is suitably fastened beneath the base 1, the vertical portion extending upwardly through an opening 17 in the base and above the upper surface of the base 1, to be engaged by the slots 15 of the units. A clamping screw 20 traverses the unit at the rear and extends across the slot 15, the end of the screw being designed to engage the rail 16 to clamp the unit in its adjusted position. Disposed at the side of each unit and bridging the slot 13, is a gauge plate 30lying against the vertical face thereof and attached thereto by a screw 31 traversing an elongated slot 32 of the plate. As shown in the drawings, the plate is in its rearmost position. The plate is cut out at 33 to provide clearance relative to the rail 16, when said plate is pushed forwardly to shorten the slot 13, so that the stock may be gaugespaced for cutting the openings at a predetermined distance from the edge thereof. After adjustment, the gauge is held by the screw 31. An L-notch 34 is provided at the gauge for the following described purpose.

In order to move simultaneously and in equal degree a plurality of gauge plates attached respectively to a plurality of punch units, the L-shaped slot'34 of each gauge plate is engaged with the rearwardly turned horizontally disposed edge 35 of a slide plate 36, which slide plate is attached to and lies upon the upper face of the base 1, parallel with the shaft 2, the attachment being made by means of set-thumb screws 37 traversing slots 38, each slot disposed at an angle of 45 to the longitudinal axis of the slide plate and at relatively opposite ends thereof. A finger piece 40 is provided centrally of the slide plate for operating the same, and, when said plate ispushed forwardly from its position shown in Fig. 1, the front edge of the plate will be moved in constant parallelism with the shaft 2 to correspondingly move all attached gauge plates an equal degree to decrease the depth of the paper-receiving slots, after which the set screws 31 and 37 may be turned to hold the gauge plates and slide plate in their set position.

In order to space the punch-carrying units in a predetermined manner for punching openings in the sheet in a desired linear spaced relation, a gauge or scale is provided at the front of the machine upon the top thereof in parallel relation with the shaft 2, which gauge or scale is mounted upon a support which comprises a hOllOW sheet metal casing 50 attached to the base by suitable astening devices. Upon the upper surface of the casing, adjacent and opposingly related to the outer ends of the punch-carrying units, which units bridge the opening 17, is provided a scale 51 having its zero graduation disposed centrally of the longitudinal dimension of the base, the scale extending in each direction from the zero mark and providing symmetrically related graduations at each side thereof. A central scale mark 52 is provided on each of the punchcarrying units. By sliding the units these gauge marks may be made to correspond with any graduations of the gauge or scale 51.

At the right of the box-like casing and at the side adjacent the punch-carrying units, is provided an opening 54, through which is introduced a sliding scale member 55, which lies against the under surface of the top of the casing and is designed to slide within the casing, being yieldably frictionally held there against by a suitable spring 56. The scale slide has an upturned end 57, as a finger-piece and stop or guide for the lefthand edge of the stock or paper. In centering the paper, the punch-carrying units having first been adjusted for punching the openings in a predetermined linear relation, the width of the paper being-known, the slide 55 is pulled outwardly until the read ing thereon in relation to the zero mark of the scale 52 indicates one-half of the known width of the sheet of paper to be used, after which the paper is introduced into the slots 14 and against the gauge members 30 and the openings may be punched symmetrically with relation to the center of the paper, and at a predetermined distance from the upper edge thereof.

When a sheet of paper is of less length than that of the scale 51, an attachment is used, which attachment consists of a strip of metal 60, of a width approximately equal inheight to the finger-piece and guide 57, and of suitable length, providing a loop v 61 disposed at right angles to the strip, which loop is designed to snugly engage over the finger-piece as best shown in Figs. 7 and'S.

The left edge of the,paper instead of being placed against the finger-piece 57 is then placed against the outer end 63 of the attachment. The slide 55 may be adjusted in the ordinary manner to dispose the outer end 63 at the proper distance for the zero mark of the scale or gauge 51. Disposed beneaththe opening 17 is a box-like receptacle 65, for the reception of the cuttings from the punches, which fall through the openings 13. This box is removably attached. A longitudinal sheet metal L- shaped member 66 is fastened beneath the base 1 and in its vertical side adjacent the bend is cutout as at 67 to into which project horizont tangs 68 integral with the rece receptacle thus being removab at its front side. 4

A resilient finger 69 is provided at the rear ofthe receptacle, the side of said receply disposed tacle 65, the y supported tacle being punched out as at 70, to provide provide slots a finger 71 engages the projection 7 0 to holddownthe box in position and by pressing d finwardly upon the outer end of the sai ger 69, the receptacle may be released an removed to dispose of its contents.

In Figs. 5 and 6, a modification of punchcarrying unit 6 is shown, having a plurality of punches 9 mounted therein, this arrangement being desirable where there is need for the punching of small standard cards without change of spacing between the openings.

Having described my invention, I claim:

A base, a punch-operating shaft journaled upon said base, punch-carrying units slidsaid shaft, reciprocable punch able upon members in said units simultaneously operable by said shaft, stock-receiving slots traversable by said punches, plates secured to said punch carrying units bridging said d slots for limiting the depth of the stock insertion within said slots, and an element commonly attached to said plates for uni 5 tarily adjusting the same.

In witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

ELMER H. SALT.

\Vitnesses:

ROBERT C.-WE1s, O. K. KEPHAR'I. 

